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Demographics of study cohort
| Characteristic | PDA Absent (N=502) |
PDA Present (N=511) |
|---|---|---|
| Gestational age | 26.5 weeks | 25.3 weeks |
| Birthweight | 792 g | 734 g |
| Sex (% male) | 47.8% | 48.7% |
| Race/Ethnicity | ||
| –Caucasian | 50% | 48.9% |
| –African American | 48% | 48.9% |
| –Hispanic | 16.3% | 21.1% |
| SGA | 20.7% | 8.2% |
| Antenatal Steroids | 79.1% | 74.1% |
